Ask the Expert

Are carrot-seed moth caterpillars invasive?

Question: I believe I have purple carrot-seed moth caterpillars in my garden primarily on my dill plants. I would greatly appreciate your help in identifying this caterpillar and if it is invasive? If so how do I get rid of them? Answer: Rebecca Long, Sustainable Agriculture and Horticulture Professional Your identification is correct, we agree […]

Read more

What are some native wildflowers to plant over a septic leach field?

Question: I would like to plant a native wildflower meadow over my mounded septic leach field as well as in the areas surrounding it. I would also like to plant milkweed to support monarchs. I’m trying to find information about if this is safe with the septic or what types of plants I should use. […]

Read more

What can be used to effectively repel Japanese beetles from plants?

Question: What can be used to effectively repel Japanese beetles from plants?  Presently I use a trap & hand pick beetles several times a day. Answer: Katherine Garland, Horticulturist I’m sorry to hear you’re dealing with a heavy “crop” of Japanese beetles this year. Now is when the adults are most actively feeding and mating, […]

Read more

How do you get rid of Magnolia Scale?

Question: I have a huge and beautiful, mature magnolia tree.  For the first time, it’s covered with Magnolia scale and is dripping sticky liquid everywhere! I’m not sure how to get rid of it and hope you have a suggestion. Answer: Katherine Garland, Horticulturist I’m sorry to hear about your magnolia tree scale. Here’s a great […]

Read more

Why does my Yew Tree have brown needles?

Question:  Why does my Yew Tree have brown needles? Answer: Katherine Garland, Horticulturist A number of issues can lead to browning needles. The University of Maine Cooperative Extension would be happy to take a look at a few pictures and learn more about what’s going on in order to hopefully diagnose the issue. Here’s a […]

Read more

How do you deter a sapsucker from destroying a willow tree?

Question: I have a relatively new golden willow in my front yard that is being slowly girdled by sapsucker holes in the bark. How do I deter the bird, protect the tree, and what should I do to prevent disease and encourage continued growth? The tree has started to send out shoots along the trunk […]

Read more

How can you control a large amount of weeds in the garden?

Question: For the last several years I have had massive amounts of weeds, that get worse every time I pull them! There are so many that my soil is solid full of roots from these weeds! How do I get my garden back?  Answer: Rebecca Long, Sustainable Agriculture and Horticulture Professional I’m sorry to hear […]

Read more